Purge-feeding apparatus for steam plants.



No. 704,469. Patented July a, |902.

J. Anm-1L.

PURGE .FEEDING APPARATUS FOR STEAM PLANTS.

(Application filed July 27, 1901.)

2 Sheets-Sheet I.

(No Modal.)

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No. 704,469. Patented luly 8, |902.

J. ANGELL.

PUBGE FEEDING APPARATUS FOR STEAM PLANTS.

(Application led July 27, 1901.)

2 Sheets-Sheet 2.

(No Model.)

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U-NTTED STATES PATENT OFFICE.'

JOHN ANGELL, OF ST. LOUIS,'MISSOURI.

PURGE-FEEDING APPARATUS FOR STEAIVI PLANTS.

SPECIFICATION forming part of Letters Patent N o. 704,469, dated July 8, 1902.

Original application lod April 27,1901. Serial No. 57,685. Divided and this application filed July 27,y 1901. Serial No. 69,888. (No model.) l i To all whom t may concern:

Beit known that I, JOHN ANGELI., a citizen of the United States, and a resident of the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Purge-Feeding Apparatus for Steam Plants; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this speciication.

The present invention relates to that type of apparatus employed in steam-engineering plants in which the feed-water mixed with a proportionate quantity of purge or coagulant compound is heated by contact with the exhaust-steam from the engine, after which it is passed through a filter-bed to remove the impurities, and from thence into the steamgenerator of therplant.

The objects of the present improvements are to provide a simple and eiicient apparatus for effecting the different operations above mentioned and in which a constant stirring of the purge or coagulant compound'is attained and a uniform and constant feed of the same effected in an automatic manner, all as will hereinafter more fully appear, and be more particularly pointed out in the claims.

I attain such objects by the construction and arrangement of parts illustrated in the accompanying drawings, in Which Figure l is a side elevation illustrating the present invention combined with a feed-water heater, portions of the' casing and heatingshelves of such heater being shown in section; Fig. 2, an end elevation of the apparatus with parts in section at line Fig. l; Fig. 3, a detail vertical axial section of the containingchamber for the purge or coagulant, illustrating the automatic stirring mechanism, the motor-engine of which is shown in section at line Fig. el.; Fig. 4, a detail horizontal section at line r2 x2, Fig. 3, illustrating the motor-engine of the stirring mechanism of the coagulant-tank. 4

Similar numerals of reference indicate like parts in the several views.

Referring to the drawings, l represents a closed housing or casing, which in the present apparatus constitutes a heating-chamber for effecting the required heating of the feedwater by the exhaust-steam from the engine. Said housing or casing will be provided with the usual steam-inlet neck or passage 2, steamoutlet neck or passage 8, feed-Water-inlet pipe or passage 4, and feed-water-outlet pipe or passage 5, extending either directly to the steam-generator or to the feed-pump by which the generator is supplied.

6 is the discharge-head for the incoming feed-Water, and 7 is a trough receiving such feed-water and distributing the same to the series of heating-shelves 8 within the main casing l, as usual in the present class of feedwater heaters.

In the construction shown inthe drawings a predetermined waterlevel is maintained automatically1 in the main heater-casing by means as follows: 9 isa float-chamber secu red to the outside of the main heater-Casin g on the sainelevelwith the normal Water-line which it is intended shall be maintained in the main heater-casing. 10 is a Water-pipe extending from the lower end of the oat-chamber 9 to thelower portion of the main casing and constituting a Water connection between the two chambers or casings. ll is an equalizing steam-pipe extending in like manner from the top of the float-chamber 9 to the upper portion of the main heater-casing and constituting a steam-filled connection between the two chambers or casings. As so arranged the two pipes 10 and ll will maintain the same Waterlevel in the ioat-chamber as prevails in the main heater-chamber, and such pipes will be made ofcomparatively large size for the purpose or function hereinafter described.

l2 is a rock-shaft intersecting one end of the .float-casing 9 and carrying Within the same the arm 13 of an operating-float 14. The end of the rock-shaft12 outside the lioat-casing carries an arm 15, having link connection 16 with a lever 17 by which the controlling-valve 1S in the feed-water-inlet pipe/t is regulated and controlled in an automatic manner, in that with the falling of the Water in the main heater-casing below the normal level the valve 18 will be opened by the automatic mechanism just described to admit a greater supply of feed-water, and as the feedwater accumulates in said main heater-cham'- IDG ber, so as to reach the normal level, the valve 18 will vagain close or partially close to reduce the supply of feed-water. 'Such changes in the ysupply of feed-water to the heater will automatically occur responsive to the iiuctuations of the water-level within such main heater.

19 is a closed holder or tank for the purge or coagulant compound of anyI usual shape and preferably arranged at the side of the main heater-casing in adjacent relation to the float-chamber 9 for the purpose of automatic control, as hereinafter set forth.

2O is a filling neck or opening for the tank 19, closed by a cap 2l, having an operating screw-shank at hand-wheel and a confiningyoke 22 swiveled ,Ito the neck, as shown, the described construction affording a connected attachment of parts which permits of the same being swung out of the way and not impede the operation of filling the tank.

2,3 is a pipe connection or passage opening' i'nto the upper part of the tank 19 and adapted to introduce a supply'of water fromv any convenient source of water-supply having .pressure sufficient to discharge the contents of the tank in the manner hereinafter described into the feed-water-inl'et pipe 4 of the apparatus.

24 is an outlet-pipe connecting with the lower end of the purge-tank 19, which in my preferred construction, as shown in the drawings, is extended up through the pipes and l1 of the fioat-chamber 9 and from thence to the regulating-valve 25 and sight-feed tube 26 to the feed-water-inlet pipe 4 to discharge a regulated and limited quantity of the purge com pound into the passing feed-water, and which amount can be regulated by the operator through the instrumentality of the regulating-valve 25, as his judgment may indicate.

27 is a branch or extension of the outlet or purge pipe 24 of the purge-tank provided with a valve 28, constituting,Y a blow-o for said purge-tank in the operation of cleaning out the same.

, By the arrangement'above described ofthe purge-carrying pipe 24 Within the pipes 10 and 11 a heating of the passing purge compound to atemperature approaching that existing within the main heater-chamberis attained, which preheating of the purge compound 1 nd by practical experiment increases the efficiency of the same to a very considerable extent.

29 is a rotary agitator having horizontal rotation preferably in a hopper-shaped bottom portion of the purge-tank 19.

30 is a shaft carrying the agitator 29 and extending up vertically through the purgetank and through a stufling-box 31 at the top of the same.

32 is a motor-wheel formed with peripheral vanes secured to the upper end of the shaft 30 and arranged Within a motor-casing 33, as shown in Figs. 4 and 5.

v 34 is the pressure-chamber of such casing,

receiving a supply of steam or other motive fluid from any suitable source through the supply-pipe 35 and provided with a tangent jet-opening 36, adapted to discharge a jet of motive fluid tangentially against the vanes of the motor-wheel 32 to impart rotation to the same.

37 is exhaust-steam chamber of the motorcasing 33, provided with an exhaust-pipe 38, which preferably extends to and discharges into the interior of the main heater-casing, as shown in Fig'. 2 of the drawings.

39 is a throttle-valve in the pressure-supply pipe 35,'which in some cases may be regulated by hand. It is, however, preferable to control the same automatically and in unison with the water-level-control mechanism,here tofore described, or a duplicate of the same, if the particular circumstances may so indicate. In the drawings I have shown the throttle-valve 39 provided with a bell-crank operating-lever 40, the free arm of which is arranged in the path of a tappet 41, adjustably secured upon thelink connection 16 of the heretofore-described automatic Iioat mech anism by which the feed-water inlet is controlled and regulated. The arrangement in this connection is such that with a downward movement of the float 14, responsive to a fall in the water-level in the main heaterchamber, the tappet 41 will contact with the` IOC IIO

tion, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination with the main feedwater chamber provided with a steam-'inlet neck and a steam-outlet neck, of a feed-water-inlet pipe provided With a regulatingvalve, a float-chamber secured to the side of the main heater-casing and having equalizing connections therewith by a water pipe or passage extending to the lower portion of the heater-casing and a steam pipe or passage extending to the upper portion of the heatercasing, a iioat arranged in said i'ioat-chamber, operative connections between the float and the regulating-valve in the feed-waterinlet pipe, a purge-tank, and a purge-outlet pipe connecting with the feed-water-inlet pipe and arranged in the equalizing-pipe connections of the iioat-chamber, substantially as set forth.

2.The combination with the main feedwater chamber provided with a steam-inlet neck, a steam-outlet neck, and a feed-waterinlet pipe, of a purge-tank, an outlet-pipe from the purge-tank connected to the feed- Water-inlet pipe, and a tubular casing surrounding the purge-outlet pipe, said casing having communication With the main heatercasing, substantially as set forth. n

3. The combination with the main feedwater chamber provided With a steam-inlet neck, a steam-outlet neck and a feed-waterinlet pipe, of a purge-tank, an outlet-pipe from the purge-tank connected to the feed- Water-inlet pipe, and a vertical pipe or passage connecting with the top and bottom of the main heater-chamber and inclosing the purge-outlet pipe, substantially as set forth.

4. The combination with the main feedwater chamber provided with a steam-inlet neck, a steam-outlet neck, and a feed-Waterinlet pipe, ofa purge-tank,an outlet-pipe from the purge-tank connected to the feed-Waterinlet pipe, means for forcing the purge compound from said tank, and means for agitating the contents of the purge-tank, the same comprising a rotary agitator arranged in said purge-tank, and a motor-engine connected to said agitator and secured to the upper end of said tank, substantially as set forth.

The combination with the main feedwater chamber provided with a steam-inlet neck, a steam-outlet neck and a feed-Waterinlet pipe, of a purge-tank,an outlet-pipe from the purge-tank connected to the feed-Water inlet, means for forcing the purge compound from said tank, and means for agitating the contents of the purge-tank, the same comprising, a rotary agitator arranged within the tank, a motor-engine having operative connection with said agitator and provided with motive-fluid inlet and outlet passages, and a pipe connecting the outlet-passage with the interior of the feed-Water chamber, substantially as set forth.

6. The combination with the main feed- Water chamber provided with a steam-inlet neck, a steam-outlet neck and a feed-waterinlet pipe, of a purge -tank, an outlet-pipe from the purge-tank connected to the feedwater inlet, means for forcing the purge compound from said tank, means for agitating the contents of the purge-tank, the same comprising, a rotary agitator arranged Within the purge-tank, a motor-engine having operative connection With said agitator and provided with motive-.Huid inlet and outlet passages, and means for automatically controlling the operation of said motor-engine, the same comprising a valve in the motive-uid-supply passage, a float-chamber connected with the main heater-chamber, a oat in said chamber, and operative connections between said oat and said valve, substantially as set/forth.

In testimony whereof witness my hand, this 24th day of July, 1901, at St. Louis, Missouri.

JOHN ANGELL.

In presence of- MORTON JOURDAN, STEPHEN C. ROGERS. 

